mirror of
https://github.com/oliverschmidt/contiki.git
synced 2024-12-23 16:29:34 +00:00
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
|
/**
|
||
|
|
* \file
|
||
|
|
*
|
||
|
|
* uart0 write routines
|
||
|
|
*
|
||
|
|
* \author
|
||
|
|
*
|
||
|
|
* Anthony "Asterisk" Ambuehl
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
#include <stdlib.h>
|
||
|
|
#include <string.h>
|
||
|
|
|
||
|
|
#include "cc2430_sfr.h"
|
||
|
|
#include "dev/uart0.h"
|
||
|
|
|
||
|
|
#if UART_ZERO_ENABLE
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
void
|
||
|
|
uart0_init()
|
||
|
|
{
|
||
|
|
UART_SET_SPEED(0, UART_115_M, UART_115_E);
|
||
|
|
|
||
|
|
#ifdef UART0_ALTERNATIVE_2
|
||
|
|
PERCFG |= U0CFG; /*alternative port 2 = P1.5-2*/
|
||
|
|
#ifdef UART0_RTSCTS
|
||
|
|
P1SEL |= 0x3C; /*peripheral select for TX and RX, RTS, CTS*/
|
||
|
|
#else
|
||
|
|
P1SEL |= 0x30; /*peripheral select for TX and RX*/
|
||
|
|
P1 &= ~0x08; /*RTS down*/
|
||
|
|
#endif
|
||
|
|
P1DIR |= 0x28; /*RTS, TX out*/
|
||
|
|
P1DIR &= ~0x14; /*CTS & RX in*/
|
||
|
|
#else
|
||
|
|
PERCFG &= ~U0CFG; /*alternative port 1 = P0.5-2*/
|
||
|
|
#ifdef UART0_RTSCTS
|
||
|
|
P0SEL |= 0x3C; /*peripheral select for TX and RX, RTS, CTS*/
|
||
|
|
#else
|
||
|
|
P0SEL |= 0x0C; /*peripheral select for TX and RX*/
|
||
|
|
P0 &= ~0x20; /*RTS down*/
|
||
|
|
#endif
|
||
|
|
P0DIR |= 0x28; /*RTS & TX out*/
|
||
|
|
P0DIR &= ~0x14; /*CTS & RX in*/
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef UART0_RTSCTS
|
||
|
|
U0UCR = 0x42; /*defaults: 8N1, RTS/CTS, high stop bit*/
|
||
|
|
#else
|
||
|
|
U0UCR = 0x02; /*defaults: 8N1, no flow control, high stop bit*/
|
||
|
|
#endif
|
||
|
|
|
||
|
|
U0CSR = U_MODE | U_RE | U_TXB; /*UART mode, receiver enable, TX done*/
|
||
|
|
|
||
|
|
/*set priority group of group 3 to highest, so the UART won't miss bytes*/
|
||
|
|
IP1 |= IP1_3;
|
||
|
|
IP0 |= IP0_3;
|
||
|
|
}
|
||
|
|
/*---------------------------------------------------------------------------*/
|
||
|
|
/* Write one byte over the UART. */
|
||
|
|
void
|
||
|
|
uart0_writeb(uint8_t byte)
|
||
|
|
{
|
||
|
|
IRCON2_UTX0IF = 0;
|
||
|
|
U0BUF = byte;
|
||
|
|
while(!IRCON2_UTX0IF); /* Wait until byte has been transmitted. */
|
||
|
|
IRCON2_UTX0IF = 0;
|
||
|
|
}
|
||
|
|
#endif
|